MODEL D15s Subwoofer: Small footprint, big sound. Benefiting from many of the technologies of our flagship subs, these sealed subs generate amazing performance in the smallest footprint. Low Q, shallow rolloff response geared for sound quality and smoothly integrating into the listening room. Also, a great choice for using multiple subs to optimize in room response and smooth out seat-to-seat variation. The D15s is the smallest single sub certified THX Dominus available on earth. Powerd by our 2.0kW amplifier, all functions and safeties are controlled by a 48-bit data bath DSP and 32-bit ARM M4 Cortex processor, able to react in microseconds, powerful enough to slam. Ground up drivers developed by our team of engineers.